I had a very hard time with my hubby, too. It's after the birth of my second baby. At that time, he didn't care about me and didn't want to talk to me.
It's a very difficult moment for me cos it's really hard to talk to anyone about this. And my hubby didn't want to discuss anything with me. Any sincere communication was not possible. Seems that he's building up a wall between us. I get lost at that time. Guessing that he got a girl friend but seems not true. No body can help me and I was desperated.
At the end, I tried to self help by reading books on family counselling. That works a bit. I was trying to focus on changing myself instead of asking him to change. If he was not ready to discuss, just don't do it. Do something that can bring you closer together instead of forcing him to discuss. May be men don't like to discuss the "relationship".
Try to understand your hubby's need is very important. Many men put sex at the very top priority, some put children. Fulfill their needs and the life will be different.
We are now getting out of the dark tunnel but the future is still tough. Keep it up, all gals!